Biogas filtration

Landfill & digester gas can contain up to 1.5% (15,000 ppm) of sulfur in the fuel gas. This sulfur oxidizes in the engine’s combustion chamber to form sulfur dioxide (SO2). That combines with water (H2O, a by-product of combustion), to form sulfurous acid (H2SO3). This, in turn, reacts with oxygen (O2) to form sulfuric acid (H2SO4). A significant amount of these impurities blow past the piston rings and accumulates in the crankcase, acidifying the oil. The wood fibers in Filtration Systems’ depth-type filters absorb this troublesome moisture, and our “-TSS” treated filters neutralize acidic compounds.

Filtration Systems manufactures air filters, oil filters and fuel-gas filters for engines running on landfill and digester fuel gas. We can improve the reliability of equipment and offer significant operational cost-savings in the bio-fuels industry, world-wide.

Bio-Gas is methane generated by sewage treatment digesters, landfills and animal-waste slop tanks. It is wet, dirty and has a low fuel value, typically between 400 & 650 BTU/ft3. (Pipeline quality gas, on the other hand, is over 1,000 BTU/ft3.)

Stationary gaseous-fueled engines require special equipment , settings and maintenance to run on such “problem fuels”. Filtration Systems already has unique products and decades of design experience in this area.

Application Overview

Engine manufacturers recommend special high-TBN oils and reduced oil drain intervals for problem fuel applications. Some sites are changing oil & filters every four weeks. Since these engines hold hundreds of gallons of oil, this is a huge expense. Unlike other filter manufacturers, Filtration Systems’ oil filters are capable of absorbing water and acids, to reduce additive depletion.

Filtration Systems makes air filter elements to fit all major U.S.-made large engines. We have special media for moisture tolerance, as well as nanofiber laminates, synthetics and pre-filters, for extended service life.